Principles of human physiology / by William B. Carpenter.

  • William Benjamin Carpenter
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: Principles of human physiology / by William B. Carpenter. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    Xvi EXPLANATION OF PLATES. PIG. 9. Portion of the mucous layer of the germinal membrane, highly magnified ; showing that it is made-up of cells, whose borders are more distinct and more closely applied to each other than those of the serous layer, and whose contents are more transparent (§ 784). [The six preceding figures are after Bischoff (Entwickelungsgeschichte der Saugethiere, &c. (1842),— des Kaninchen-eies (1842),— des Hunde- eies (1845).] 10. Gravid Uterus of a Woman who had committed suicide in the seventh week of pregnancy, laid open :—a, os uteri internum ; b, cavity of the cervix; c, c, c, c, the four flaps of the body of tbe uterus turned back ; d, d, d, inner surface of uterine decidua ; e, e, decidua reflexa ; /, /, external villous surface of the chorion; g, internal surface of the chorion ; h, amnion; i, umbilical vesicle ; k, umbilical cord ; I, embryo; m, space between chorion and amnion (§§ 759-764, and 785-787). [After Wagner ( Icones Pkysiologicae).] PLATE II. 11. Uterine Ovum of Rabbit, showing the Area Pellucida, with the primitive trace (§§ 781, 785). 12. More advanced Ovum, showing the incipient formation of the Vertebral column, and the dilatation of the primitive groove at its anterior extremity (§§ 785, 801, 808, 809). 13. More advanced Embryo, seen on its ventral side, and showing the first develop- ment of the Circulating apparatus. Around the Vascular Area is shown the terminal sinus, a, a, a. The blood returns from this by two superior branches, b, b, and two inferior, c, c, of the omphalo-mesenteric veins, to the heart, d; which is, at this period, a tube curved on itself, and pre- senting the first indication of a division into cavities. The two aortic trunks appear, in the abdominal region, as the inferior vertebral arteries, e, e ; from which are given-off the omphalo-mesenteric arteries, /, /, which form a network that distributes the blood over the vascular area. In the cephalic region are seen the anterior cerebral vesicles, with the two ocular vesicles, g (§§ 787-790). [The three preceding figures are from the works of Bischoff previously cited.] PLATE III. (To face page 28.) Comparative View of the Skeleton of Man, and of that of the Orang Outan. [After Owen ( Zoological Transactions, vol. i.).]